J/A+A/466/75 PN and HII regions of West and East of NGC 3109 (Pena+, 2007)
A catalog of planetary nebulae and HII regions in NGC 3109.
Pena M., Richer M.G., Stasinska G.
<Astron. Astrophys. 466, 75 (2007)>
=2007A&A...466...75P 2007A&A...466...75P
ADC_Keywords: H II regions ; Planetary nebulae ; Photometry
Keywords: galaxies: individual: NGC 3109 (DDO 236) -
ISM: planetary nebulae: general - ISM: HII regions - galaxies: ISM
Abstract:
Images obtained with the ESO VLT and FORS1 in [O III] 5007 on- and
off-band, as well as r_Gunn filters, are analyzed to search for
planetary nebula (PN) candidates.
In the continuum-subtracted [O III] 5007 on-band images, a large
number of emission-line regions were detected. We describe the
criteria employed for distinguishing PN candidates from compact HII
regions.
Description:
Six files (fits format, 16MB) containing images of the West (W) and
East (E) zones of NGC 3109 are presented. The images are a combination
of frames obtained with the ESO Very Large Telescope and the Focal
Reducer Spectrograph FORS1.
All the frames were obtained on 29 November and 1 December 2005, with
air masses smaller than 1.16 and seeing better than 0.7 arcsec.
They constitute the pre-imaging of the ESO program ID 076.B-0166(A).
Central coordinates of images are:
West side (images named NGC3109W-xxxx.fits)
RA=10:02:54.5, DE=-26:09:22, equinox 2000.
East side (images named NGC3109E-xxx.fits)
RA=10:03:19.8, DE=-26:09:32, equinox 2000.
The image size is 6.8x6.8arcmin2.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------
10 02 54.5 -26 09 22 NGC 3109W
10 03 19.8 -26 09 32 NGC 3109E
-----------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
images.dat 28 6 List of images
table1.dat 81 20 Positions and characteristics of PN candidates
in NGC 3109. All these objects are unresolved
table2.dat 161 40 Positions and characteristics of HII regions
in NGC 3109
images/* . 6 Images in FITS format
--------------------------------------------------------------------------------
Description of file: images subdirectory
1.- NGC3109W-5007.fits (West at 5007Å) is an average of the frames:
r.FORS1.2005-11-29T07;48:55.773_0000.fits
r.FORS1.2005-11-29T07:51:23.734_0000.fits
r.FORS1.2005-11-29T07:53:51.474_0000.fits
r.FORS1.2005-11-29T07:56:17.476_0000.fits
2.- NGC3109E-5007.fits (East at 5007Å) is an average of the frames:
r.FORS1.2005-11-29T08:16:31.055_0000.fits
r.FORS1.2005-11-29T08:18:57.606_0000.fits
r.FORS1.2005-11-29T08:21:23.457_0000.fits
r.FORS1.2005-11-29T08:23:50.487_0000.fits
The frames for images 1 and 2 were obtained with the filter
FILT5005+85 (central lambda 5000Å). These are on-band images in the
[OIII] 5007 emission line.
3.- NGC3109W-5105.fits (West at 5105Å) is an average of the frames:
r.FORS1.2005-11-29T07:58:55.867_0000.fits
r.FORS1.2005-11-29T08:01:19.027_0000.fits
r.FORS1.2005-11-29T08:03:42.008_0000.fits
r.FORS1.2005-11-29T08:06:04.628_0000.fits
4.- NGC3109E-5105.fits (East at 5105Å) is an average of the frames:
r.FORS1.2005-11-29T08:26:29.099_0000.fits
r.FORS1.2005-11-29T08:28:51.839_0000.fits
r.FORS1.2005-11-29T08:31:13.840_0000.fits
r.FORS1.2005-11-29T08:33:36.691_0000.fits
The frames for images 3 and 4 were obtained through the filter
OIII/6000+52, with central lambda 5105. Images 3 and 4 are the
off-band images.
5. File NGC3109W-r.fits (West at r_Gunn, 6530Å) is an average of the frames:
r.FORS1.2005-11-29T08:08:42.289_0000.fits
r.FORS1.2005-11-29T08:09:46.334_0000.fits
r.FORS1.2005-11-29T08:10:49.219_0000.fits
r.FORS1.2005-11-29T08:11:53.023_0000.fits
6. Files NGC3109E-r.fits (East at r_Gunn, 6530Å) is an average of the
frames:
r.FORS1.2005-11-29T08:36:15.142_0000.fits
r.FORS1.2005-11-29T08:37:20.027_0000.fits
r.FORS1.2005-11-29T08:38:22.822_0000.fits
r.FORS1.2005-11-29T08:39:26.057_0000.fits
r.FORS1.2005-12-01T08:33:14.946_0000.fits
r.FORS1.2005-12-01T08:34:16.781_0000.fits
r.FORS1.2005-12-01T08:35:19.996_0000.fits
The frames for images 5 and 6 were obtained through the filter r_Gunn,
with central lambda 6530Å.
--------------------------------------------------------------------------------
See also:
J/A+A/410/795 : Photometry of NGC 3109 carbon stars (Demers+, 2003)
J/A+A/361/491 : NGC 3109 X-ray sources (Kahabka+, 2000)
J/AJ/105/894 : Star formation in DDO 210 and NGC 3109 (Greggio+ 1993)
Byte-by-byte Description of file: images.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Band Wavelength or band
6- 9 A4 --- E/W East or West par of NGC 3109
11- 28 A18 --- FileName Name of the image file in subdirectory images
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [PN]
4- 5 I2 --- PN PN designation
7- 8 I2 h RAh Right ascension (J2000)
10- 11 I2 min RAm Right ascension (J2000)
13- 17 F5.2 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31- 34 F4.1 mag m5007 Nebular magnitude at 5007Å
35 A1 --- u_m5007 Uncertainty flag on m5007
37 A1 --- l_mstar Limit flag on mstar
38- 41 F4.1 mag mstar Apparent visual magnitude for the
central star
42 A1 --- u_mstar Uncertainty flag on mstar
44 A1 --- l_Vmag Limit flag on Vmag
45- 48 F4.1 mag Vmag V stellar magnitude of the ionizing star (G1)
49 A1 --- u_Vmag Uncertainty flag on Vmag
51 A1 --- l_rmag Limag flag on rmag
52- 55 F4.1 mag rmag Instrumental Gunn r magnitude
57- 62 F6.2 [mW/m2] logF5007 ? Flux at 5007Å from spectroscopy
64- 69 F6.2 [mW/m2] logF5007c Calculated flux at 5007Å (G2)
71- 81 A11 --- OName Other name (from Richer & McCall,
1992AJ....103...54R 1992AJ....103...54R)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [HII]
5- 6 I2 --- HII HII designation
8- 9 I2 h RAh Right ascension (J2000)
11- 12 I2 min RAm Right ascension (J2000)
14- 18 F5.2 s RAs Right ascension (J2000)
20 A1 --- DE- Declination sign (J2000)
21- 22 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 30 F4.1 arcsec DEs Declination (J2000)
32 A1 --- l_phi Limit flag on phi
33- 36 F4.1 arcsec phi Diameter of the HII region
38- 41 F4.1 mag m5007 ?=- Nebular magnitude at 5007Å
42 A1 --- u_m5007 Uncertainty flag on m5007
44- 47 F4.1 mag mstar ?=- Apparent visual magnitude for the
central star
49- 52 F4.1 mag Vmag ?=- V stellar magnitude of the
ionizing star (G1)
53 A1 --- u_Vmag Uncertainty flag on Vmag
54- 57 F4.1 mag rmag ?=- Instrumental Gunn r magnitude (6530Å)
59- 64 F6.2 [mW/m2] logF5007 ?=- Flux at 5007Å from spectroscopy
66- 71 F6.2 [mW/m2] logF5007c ?=- Calcutaled Flux at 5007Å (G2)
72 A1 --- u_logF5007c Uncertainty flag on logF5007c
74- 83 A10 --- Morph Morphology code (1)
86- 92 A7 --- SpClass Spectral classification of the ionizing star
94-161 A68 --- ONames Other names (2)
--------------------------------------------------------------------------------
Note (1): abbreviations used:
comp = compact
cmplx = complex
diff = diffuse
ext = extended
unres = unresolved
Note (2): Nomenclature as follows:
[RM92] = Richer & McCall (1992AJ....103...54R 1992AJ....103...54R, RMc)
[BCP93] = Bresolin et al. (1993AJ....105.1779B 1993AJ....105.1779B, F3H1, F5H4, D1H6...)
[H69] NGC 3109 = Hodge (1969ApJS...18...73H 1969ApJS...18...73H, Ho)
[HHG93] NGC 3109 = Hunter et al. (1993AJ....106.1797H 1993AJ....106.1797H, Hu)
--------------------------------------------------------------------------------
Global notes:
Note (G1): As derived by Demers et al. (1985AJ.....90.1967D 1985AJ.....90.1967D).
Note (G2): Flux calculated with the equation
logF(5007)=-0.40m(5007)-8.32
--------------------------------------------------------------------------------
Acknowledgements:
Miriam Pena, miriam(at)astroscu.unam.mx
(End) Patricia Vannier [CDS] 19-Mar-2007